Power device complexity

Power semiconductor production is highly complex and involves many stages requiring in-depth materials knowledge and expertise. A first precondition is the availability of the proper raw materials and production equipment. The initial manufacturing stages deal with semiconductor front-end processing comprising a series of steps in which the active area of the device is built up.

Subsequent stages deal with semiconductor back-end production. These include thin-layer metallisation and a set of particular active wafer back-end process steps, which are essential in the manufacture of power semiconductors. One key process is wafer thinning, since the thickness of a power device has considerable influence on its performance. Further manufacturing steps include device testing and device assembly.